Bad Habits by Babette Cole

Just what is to be done with Lucretzia Crum? Everyone has a few bad habits. But Lucretzia has all of them! She's the burping-est, spitting-est, kicking and screaming-est girl in the whole town. And worst of all, her friends think Lucretzia's the cool-est! So what can be done with such a girl? Well...with her deceptively calm mom and mad scientist dad working on a number of wacky ways to tame their wild "little monster," it seems that Lucretzia's just deserts will soon be served!

Publishers Weekly

Worst of all, her classmates begin to emulate her: ""They thought it was dead cool to be a little monster like Lucretzia Crum!"" Lucretzia's father, a ""mad scientist,"" devises inventions like ""anti-foul-mouth soap"" and the ""classroom pacifier"" (a mini-jail cell that the teacher can lower ou...